■ Switch a call between headset and mobile device
To switch a call from the headset to a connected device, press and hold
the multifunction key for about 4 seconds (the headset switches off), or
use the keys of your device.
To switch the call back to the headset, switch on the headset (and
connect it to your paired device), or press and hold the multifunction key
for about 2 seconds (when the headset is switched on).
B a s i c u s e